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September Weather in Saint-Lazare, Canada

Last updated: June 18, 2025

The average temperature in Saint-Lazare, Canada during September is a comfortable 16°C (61°F). However, be prepared for a range that can drop to a chilly 0°C (32°F) or soar to a warm 32°C (89°F). Expect some precipitation, with 81 mm (3.2 in) of rain over about 9 days. With an average humidity of 78%, it might be wise to pack accordingly!

September Temperature in Saint-Lazare

In September in Saint-Lazare, the average temperature is 16°C (61°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 0°C (32°F). It's a great time to pack versatile clothing to enjoy both warm days and cool nights during your travels.

September Weather in Saint-Lazare: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Lazare, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Lazare, September typically has an average temperature of 16°C (61°F), with highs reaching up to 32°C (89°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec161928425666716961493423
Data source: Temperature data for Saint-Lazare generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Saint-Lazare

In Saint-Lazare in September, the precipitation amount is 81 mm (3.2 in) spread over a duration of 9 days.

September Precipitation Trends in Saint-Lazare

The chart displays monthly precipitation patterns in Saint-Lazare, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Saint-Lazare, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8689911201101041091058113311291
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Lazare

In Saint-Lazare in September, humidity is 78%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as it clings to your skin and creates a heavy atmosphere that can drain your energy.

September Average Humidity in Saint-Lazare

This chart illustrates the average monthly humidity levels in Saint-Lazare, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Saint-Lazare is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Lazare

In Saint-Lazare in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Saint-Lazare.

Maximum UV Index Levels in Saint-Lazare for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Lazare in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Saint-Lazare typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Saint-Lazare September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Saint-Lazare Compares to Other Months

Weather in Saint-Lazare varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint-Lazare, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Saint-Lazare, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)86 mm (3.4 inches)93%low
February Weather-7°C (19°F)89 mm (3.5 inches)92%moderate
March Weather-2°C (28°F)91 mm (3.6 inches)86%moderate
April Weather6°C (42°F)120 mm (4.7 inches)85%high
May Weather13°C (56°F)110 mm (4.3 inches)80%very high
June Weather19°C (66°F)104 mm (4.1 inches)74%very high
July Weather22°C (71°F)109 mm (4.3 inches)76%very high
August Weather20°C (69°F)105 mm (4.1 inches)75%very high
September Weather16°C (61°F)81 mm (3.2 inches)78%high
October Weather9°C (49°F)133 mm (5.2 inches)86%moderate
November Weather1°C (34°F)112 mm (4.4 inches)88%moderate
December Weather-5°C (23°F)91 mm (3.6 inches)89%low

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